From: Andi Kleen <andi@firstfloor.org>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Mark Hounschell <markh@compro.net>,
"Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
"dmarkh@cfl.rr.com" <dmarkh@cfl.rr.com>,
Alain Knaff <alain@knaff.lu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"fdutils@fdutils.linux.lu" <fdutils@fdutils.linux.lu>,
"Li, Shaohua" <shaohua.li@intel.com>, Ingo Molnar <mingo@elte.hu>
Subject: Re: [Fdutils] DMA cache consistency bug introduced in 2.6.28
Date: Fri, 25 Dec 2009 21:33:04 +0100 [thread overview]
Message-ID: <20091225203304.GA22306@basil.fritz.box> (raw)
In-Reply-To: <20091225132116.6c9089f2@infradead.org>
On Fri, Dec 25, 2009 at 01:21:16PM +0100, Arjan van de Ven wrote:
> On Wed, 23 Dec 2009 18:08:32 +0100
> Andi Kleen <andi@firstfloor.org> wrote:
>
> > I removed that code when moving to 64bit (floppy driver disabling C1),
> > but perhaps we need some variant of it again (but it's the first such
> > report in many years). Although it would be sad to have it again on
> > all systems.
>
> at least now we have the pmqos infrastructure, driver just needs to ask
> for 0 latency ;)
Does pmqos work with apci=off etc.? I didn't think it shut down
the classic "HLT" idle, does it? The old i386 systems needed that
apparently, they long pre date any deeper idle states.
Anyways the code is still there for 32bit.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2009-12-25 20:33 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
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2009-12-17 17:00 ` DMA cache consistency bug introduced in 2.6.28 (Was: Re: [Fdutils] Cannot format floppies under kernel 2.6.*?) Alain Knaff
2009-12-17 17:27 ` Linus Torvalds
2009-12-17 18:21 ` DMA cache consistency bug introduced in 2.6.28 Krzysztof Halasa
2009-12-17 20:46 ` DMA cache consistency bug introduced in 2.6.28 (Was: Re: [Fdutils] Cannot format floppies under kernel 2.6.*?) Alain Knaff
2009-12-17 21:14 ` Linus Torvalds
2009-12-17 22:11 ` Alain Knaff
2009-12-17 22:43 ` Linus Torvalds
2009-12-17 23:24 ` Alain Knaff
2009-12-18 8:59 ` Mark Hounschell
2009-12-18 10:55 ` [Fdutils] DMA cache consistency bug introduced in 2.6.28 (Was: " Mark Hounschell
2009-12-18 15:01 ` [Fdutils] DMA cache consistency bug introduced in 2.6.28 Krzysztof Halasa
2009-12-18 15:22 ` [Fdutils] DMA cache consistency bug introduced in 2.6.28 (Was: Re: Cannot format floppies under kernel 2.6.*?) Linus Torvalds
2009-12-18 15:28 ` Mark Hounschell
2009-12-18 15:45 ` Linus Torvalds
2009-12-18 20:04 ` Mark Hounschell
2009-12-18 20:15 ` Linus Torvalds
2009-12-22 15:11 ` Mark Hounschell
2009-12-22 17:38 ` Linus Torvalds
2009-12-22 17:57 ` Mark Hounschell
2009-12-22 23:37 ` Pallipadi, Venkatesh
2009-12-23 0:22 ` Mark Hounschell
2009-12-23 13:02 ` Mark Hounschell
2009-12-23 15:10 ` Pallipadi, Venkatesh
2009-12-23 15:34 ` Mark Hounschell
2009-12-23 15:57 ` Mark Hounschell
2009-12-23 16:31 ` Linus Torvalds
2009-12-23 16:38 ` [Fdutils] DMA cache consistency bug introduced in 2.6.28 Andi Kleen
2009-12-23 16:49 ` Linus Torvalds
2009-12-23 17:08 ` Andi Kleen
2009-12-25 12:21 ` Arjan van de Ven
2009-12-25 20:33 ` Andi Kleen [this message]
2009-12-26 9:38 ` Arjan van de Ven
2009-12-26 16:40 ` Andi Kleen
2009-12-27 12:28 ` Alain Knaff
2009-12-28 1:54 ` Andi Kleen
2009-12-28 10:27 ` Alain Knaff
2009-12-28 14:54 ` Andi Kleen
2009-12-27 11:09 ` Pavel Machek
2009-12-28 20:54 ` Mark Hounschell
2009-12-23 17:19 ` Pallipadi, Venkatesh
2009-12-23 17:16 ` Andi Kleen
2009-12-23 20:11 ` alain
2009-12-23 17:41 ` Mark Hounschell
2009-12-23 18:01 ` Linus Torvalds
2009-12-23 18:11 ` Mark Hounschell
2009-12-23 19:18 ` Pallipadi, Venkatesh
2009-12-23 19:35 ` Mark Hounschell
2009-12-23 20:30 ` Pallipadi, Venkatesh
2009-12-23 20:34 ` alain
2009-12-23 21:34 ` Pallipadi, Venkatesh
2010-01-08 17:42 ` Mark Hounschell
2010-01-12 0:19 ` Pallipadi, Venkatesh
2010-01-12 9:04 ` Mark Hounschell
2010-01-15 2:01 ` Pallipadi, Venkatesh
2010-01-15 9:39 ` Mark Hounschell
2010-01-15 18:02 ` Mark Hounschell
2010-01-21 19:09 ` [PATCH] x86: Disable HPET MSI on ATI SB700/SB800 Pallipadi, Venkatesh
2010-01-22 22:00 ` [tip:x86/urgent] " tip-bot for Pallipadi, Venkatesh
2010-01-23 6:51 ` tip-bot for Pallipadi, Venkatesh
2010-01-23 7:21 ` [PATCH] " Yuhong Bao
2010-01-25 17:10 ` Andreas Herrmann
2010-01-28 9:17 ` Mark Hounschell
2010-01-28 13:25 ` Mark Hounschell
2010-01-28 13:41 ` Borislav Petkov
2010-01-28 14:45 ` Mark Hounschell
2010-05-17 14:59 ` Andreas Herrmann
2010-05-17 15:10 ` Yuhong Bao
2010-05-17 15:12 ` Linus Torvalds
2010-05-17 16:46 ` Andreas Herrmann
2010-05-18 0:56 ` Robert Hancock
2010-05-18 1:02 ` Linus Torvalds
2010-05-18 1:06 ` Robert Hancock
2010-05-18 8:45 ` Andi Kleen
2010-05-18 23:22 ` Robert Hancock
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